Nathie, M, and S Maharaj. “Trans-Oral Penetrating Trauma to the Neck: The Innocuous Pen Cap and the Value of CT Scan”. South African Journal of Surgery 57, no. 3 (June 27, 2019): 59. Accessed November 19, 2019. http://sajs.redbricklibrary.com/index.php/sajs/article/view/2912.